13708247 has 4 divisors (see below), whose sum is σ = 15666576. Its totient is φ = 11749920.

The previous prime is 13708243. The next prime is 13708283. The reversal of 13708247 is 74280731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13708247 - 2² = 13708243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13708243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 979154 + ... + 979167.

It is an arithmetic number, because the mean of its divisors is an integer number (3916644).

Almost surely, 2^13708247 is an apocalyptic number.

13708247 is a deficient number, since it is larger than the sum of its proper divisors (1958329).

13708247 is an equidigital number, since it uses as much as digits as its factorization.

13708247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958328.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 13708247 is about 3702.4649897062. The cubic root of 13708247 is about 239.3282546820.

Adding to 13708247 its reverse (74280731), we get a palindrome (87988978).

The spelling of 13708247 in words is "thirteen million, seven hundred eight thousand, two hundred forty-seven".